package com.corpdata.core.async.pool;

import java.util.concurrent.Executor;  
import java.util.concurrent.ThreadPoolExecutor;  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.context.annotation.Bean;  
import org.springframework.context.annotation.Configuration;  
import org.springframework.scheduling.annotation.EnableAsync;  
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import com.corpdata.core.async.TaskThreadPoolConfig; 
/**
 * 自定义线程池配置（myTaskAsyncPool）
 * @author zealon
 *
 */
@Configuration  
@EnableAsync  
public class TaskExecutePool {  
  
    @Autowired  
    private TaskThreadPoolConfig config;  
  
    @Bean  
    public Executor myTaskAsyncPool() {  
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();  
        executor.setCorePoolSize(config.getCorePoolSize());  
        executor.setMaxPoolSize(config.getMaxPoolSize());  
        executor.setQueueCapacity(config.getQueueCapacity());  
        executor.setKeepAliveSeconds(config.getKeepAliveSeconds());  
        executor.setThreadNamePrefix("MyExecutor-");  
  
        // rejection-policy：当pool已经达到max size的时候，如何处理新任务  
        // CALLER_RUNS：不在新线程中执行任务，而是由调用者所在的线程来执行  
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());  
        executor.initialize();  
        return executor;  
    }  
}  
